Type-writing machine.



PATENTED JULY 23, 1907.

A. W. SMITH.

TYPE WRITING MACHINE. APPLICATION FILED 0OT.5, 1905.

\A/ITNESEEE: INVENTIIIR= 6' 4 .vkd uzt \A/lTNESiEi No. 860,834. [PATENTED JULY 23, 1907. A. W. SMITH.

TYPE WRITING MACHINE. APPLIOATION FILED 0015, 1905.

3 BHEETSBHEET 2.

HI-E ATTURNEY PATENTED J'ULY23,-1907.,

a sums-suns? a.

INVENTUFQ;

WITNEEIEIEE H15 TTEIRNEY ITED STAEE S FEENT F ARTHUR W. SMITH, OF NEW YORK, N. Y., ASSIGNOR TO. YOST WRITING'MAO HINE COMPANY,

OF ILION, NEW YORK, A CORPORATION OF NEW YORK.

TYPE-WRITING MACHINE. 7

Patented. July 23, 1907.

Application filed October 5. 1905. Serial Hm $1.406,

To all whom it may concern;

-Be it known that I, ARTnUa W. SMITH, a citizen of the .UnitedStates, and a resident of the borough of Manhattan, city of New York, in the county of New .York and State of New York, have invented certain newand useful Improvements in Type-Writing Machines, of which the following is a specification.

My invention relates to typewriting machines and more particularly to means for affording a connection and disconnection between the line spacing wheel and platen for fractional line spacing.

' 1 Heretofore great difficulty has been encountered in providing efficient fractional line spacing mechanism. It must be understood, in order to appreciate some of these difficulties, that the very finest adjustment is required between the'line spacing wheel and platen 40 or disengagement between the line spacing wheel and platen-an accidental displacement between the parts the operator to actuate.

and that there must be absolutely noaccidentaldisplacement of the part5; from this adjustment when once effected, as a thousandth of an inch displacement of a character out of a line of writing is quite perceptible in the printed matter.

V In devices where differential gearing was employed between the line spacing wheel and platen, there was almost invariably a back lash" or lost motion in the gear connections which affected the results. Then again when frictional means were employed to connect .the line spacing wheel and platen considerable power, say thirteenpounds in some devices, was necessaryto maintain the connection and this power must be overcome in releasing the device, rendering it difficult for Even with this power the friction devices were unreliable, as the line spacing wheel was often accidentally displaced relatively to the platenwhen the line spacing lever was violently actuated, as for instance when the carriage was restored and a line-spacing movement of the platen-effected at a single operation.

In devices which received a rotary movement of a finger-wheelor controlling piece and which required considerable power or pressure to effect an engagement wasliable'to be effected without the operator observing it and the work was apt to be ruined.

In devices which employ interlocking teethto effect a clutching engagement between the line spacing whee and platen, it is necessary to have teeth of considerable size in order to bring about an effective interlocking engagementbetween the parts and a relative adjustment between: the line spacing wheel 'and platen, or a fractional-spacing of the platen' for a. distance less than thedistance between two teeth of the engaging mem-.

bers cannot be effected, and the usefulness of the device I.

is restricted. The type will strikeon predetermined fixed lines on the platen instead of using the entire surface of the platen. 7

In any such construction heretofore devised, the teeth of the engaging members restricted the adjustment of fractional spacing of the platen. Furthermore, in this class of devices the platen was often accidentally displaced from its adjusted position while an engagement was being effected and often the displacement occurred without the operators knowledge. Thus, if

the platen happens to be adjusted to a point where the crowns of the teeth on both engaging. members come into contact during the engagement of the parts, then the locking of the parts together will cause the platen to rotate until the teeth are brought'into proper interlockingmesh and however slight the movement of the" platen, it is sufficient to throw the workout of alinement and to render the written matter-uneven and unsatisfactory. v I

From the foregoing it will be understood that in prior devices where positive or interlocking means were employed to connect the line spacing wheelandplaten the platen could not be adjusted to any point relatively to the line spacing wheel and connected to the wheel at the point of adjustment. v

Theobject of myfpresent inventionis to overc ome the above and other defects that have been encounftered. heretofore in fractional line spacing mechanism and to provide a fractional line spacing device which will be efiicientin operation under all conditions of its use. 1 have provided means whereby the platen may be turned to anyp osition relative to the line space wheel and whereby it'may be positively locked enactly in that position. i I i To the above and other ends which will hereinafter appear, my invention consists of thefeatures of construction, arrangements of parts and combinations of devices to be hereinafter described and claimed. In the accompanying drawings wherein like reference characters indicate corresponding parts in the various views, Figure 1 isa detail, central, longitiidinal,

sectional view of a platen and line spacing wheelshow ing my invention applied thereto. Fig. 2 is a like view of the same witli parts broken away, the section being taken on a plane at right angles to that shown at 4 Fig. 1. Fig. 3 is a detail end elevation looking towards the line spacing wheeland with the finger wheel sectionedaway. Fig. 4 is an enlargeddetail sectional view of the carrierfor one of the locking members to be hereinafter more, fully described. 'Fig. 5 is an .en largeddetail perspective viewoi one of the locking members: Fig.6 is a like view of another of saidlocking members. Fig. 7 is an enlarged detail perspective view of the line spacing wheel. Fig. 8 is a fragmentary sectional view similar to that shown -in Fig. 1 but ,with.

' different disposition of the parts.

,vation of the same.

13 is a detail transverse sectional view showing the v locking members, the section being taken'on the line x.a; in 8 and looking in the direction of the arrow at said line.

Fig. 14 is a detail, central, sectional view of the cap or member secured to the right-hand .platen head. Figs. and 16 are views similar to Figs. 1 and,

'13, respectively, but showing a different adjustment of the parts. v

The cylindrical platen 1 may be of any desired construction. The one here shown is similar to that ordinarily employed in the Yost machine. It is preferably provided at its left-hand end with a platen head 2 whichis secured to a hollow wooden core 3 of the platen by headed wood screws 4 whichprojectthrough opjenings in the platen head and the-stems of which take into the end of the core. An outwardly projecting sleeve, 5 on the platen head 2 bears at its end against the platen frame 6 and receives a spindle 7 which projects'from-a fixedly connected finger wheel. 8, said spindle extending through a bearing opening in the platen frame and into the sleeve 5. A conical pin 9' extends through openings in the sleeve 5 and spindle 7 and locks the spindle 7 and platen head 2 together.

i The stem of a headed bolt ].0 projects through a central opening in the platen head 2 andits inner threaded -end is received in a tapped opening in a nut 11, ex-

ternal threads on which are received in a tubular bearing member 12 which constitutes a part of the .is illustrated in detail in Fig. 12.. Said-righthand seated within said projecting sheath 'and constitutes platen head has a cylindrical part 13 of a size to .fit snugly in the hollowplatencoreS, andalso a flange 13 that lies against theend of said core, against which it is firmly held by the rod 10. Pins 14 project from said flange 13 into holes in the endoi the core 3 and prevent relative rotation of said core and the platen head. The sheath of the platen projects beyond-the right-hand end of the core 3 and a metallic ring 15 is a bearing" for the flange 13" of the right-hand platen head, as shown in 2. This ring 15 is fixed to the platen and bears at its inner edge against the core 3 thereofand the outer edge of the ring consitutes a bearing for the inner side of a line spacing wheel 16. The line spacing wheel is in the nature of a ring, such as that shown in detail in Fig. .7, and the inner surface 17 'thereot is received on the'peripheral bearing edge- 'the line-spacingwheel to rotate upon and preventing a movement-of the line spacing wheel longitudinally ofthe platenin one direction, Whereas the ring 15 con- I stitutes a bearing that prevents the line spacing wheel from anoving longitudinally of the platen in the opposite direction. The cap or member 19, being rigidly secured to the platen head by the screws 20 connects the parts and maintains v the line spacing wheel in place on the platen bead though it allows the wheel to rotate thereon. 'Ehe'member-JQ has a sleevelike portion 22 which is tapped at 23 to receive a screw 23, the inner endof which is received within a hole in a hollow stem 24 seated at one end in the sleeve'22, so that the stem is connected to the platen head to rotate therewith.

The outer end of the hollow stern24 has a finger wheel 25 rigidly connected thereto, A' plunger 26 is received within the hollow stem 24' and is adapted to move longitudinallytherein and the inner end of this plunger is tapped to receive a headed screw '27, the head of which is adapted to bear against the inner end of the hollow stem and prevent an endwisc withdrawal of the plunger. The outer end oithe plunger is pro- 'videdwith a finger piece omb'utton 28 by which the plunger 26 may be pushed inward. In order to provide for locking the plunger in its inner position, saidplunger, adjacent to this finger piece, has a reduced portion 29 which is adapted to register with a laterally extending opening30 in the fingerwheel when the plunger is moved to the innermost position shown in Fig. Seated within this opening or channel 30 isa bearing sleeve 31 which is frictionally held in place in the opening. A spindle 32 extends through the sleeve 31 and is provided at its inner end with a locking head 33 that is larger than the opening in' the sleeve-3] and cooperates with one end of it to'prevcnt the Withdrawal of the spindle from the sleeve. The outer end of the sleeve has an enlarged bore that receives a coiled expansion spring34 which surrounds.

the spindle. and bears at its inner end against the sleeve and at its outer end against the enlarged head or finger piece 35 of the locking member or device.

Normally the plunger 26 may be moved from the position shown in Fig. 1 to that illustrated iii-Fig. 8

and when finger pressure is released therefrom it will be restored to normal position shown in Fig. 1, as will hereinafter more clearly appear. The plunger may, however, when desired be locked in its pushed in position, shown in Fig. 8, by the locking head 33. Thus, when the plunger is moved to the position shown in v Fig. 8 and the finger piece 35 is depressed to move the locking member 33 to the locking position shown in this figure andfinger pressure on theplunger 26 is-released, the pressure exerted by a spring 36, in the mannor to be hereinafter described, will maintain the lock ing head in the locked position and will prevent the restoration. ofthe plunger 26 to its normal position.

In order to accomplish this result it will be understood that the tension of the spring 36 is greater than the spring 34 andv that the pressure exerted by the spring 36 through the plunger 26 binds the locking head 33 in the locked. position, overcoming the power of the. l restoring spring 34. The line} spacing wheel is pro vided with a series of circularly arranged crown teeth 37 which extend from the line spacing wheel towards the opposite end of the platen into the annular space .13

cylindrical part 4] of said carrier, in position to engage .teeth are preferably beveled, whereas the sides or body portions of the teeth are substantially parallel.

'the cylinder 13 1and back a short distance into the member 39l1as radially proj'ectingtherefrom on oppo-' teeth 38 into one of the notches between the 'teeth37 of.

car'rier 42 and a )in 49 ro'ects from said lon er seated in the bore 48 and com nessed between the plunplaton, as shown in Figs. 1 and 13, and'the ends of the incloscd by the ring 15. The tips or crownsof'these I The notches between the teeth 37 are adapted to re-' ceive a clutch teeth 38 projecting from a clutch member 39, shown in detail in Fig. 5. Said member 39 has a semi-circular part 40 that fits loosely over a semicylindrical part 41 of a carrier 42 that is loosely mounted in the tubular portion 12 of the right-hand platen head. The left-hand end part 42 oi the carrier 42 is cylindrical and lits in the tube 12 with freedom to move longitudinally of said tube, and this part of said carrier has its end engaged by the spring 36, which presses the carrier toward the right. The right-handpart 41 of said carrier is semi-cylindrical, and its end en: gages the head of the screw 27, which is threaded into the spindle 26, so that when said spindle is pressed inward, the can'ier is moved toward the left against the tension of the spring 36. The right-hand end of the. platen head 13 has a transverse longitudinal slot 43 formed therein, which slot is cut through the flange 13 tube .12, the walls 43 and 43* (Fig. 12) of said slot being plane parallel surfaces, each parallel to the axis of the platen. The semi-circular part 40 of the member 39 fits loosely over the semi-cylindrical part 41' of thecarrior 42 and inside of the tube 12, so that said member; has both a longitudinal and turningmovement. Said site sides of the axisof the platen, two wings 39*;(Figsf 5 and 13), and the tooth 38 is in the nature of an exten sion of one of these wings. The wings 39 project into the slot 43, the walls-oi which limitthe turning movement of the member 39 in both directions. lAs" shown in Fig. 8, the core 3 of the platen iscut away to admit the tooth 38. Thewings 39* are beveled on one side to form wedge surfaces 44 and 44 respectively: The motion of the member 39 longitudinally of the platen is derived from the carrier 42. The semi-circle lar part 40 of said member has formed in its right-hand edge a V-shapcd notch 45 that is adapted to be (rngaged by a pin 46 projecting radially l'rom the carrier 42 near the right hand end thereof, when said carrier is moved inward by the spindle 26. When said pin engagessaid notch it serves to center the member 39 on the carrier. Said member is moved toward the right to press the theline space wheel by spring pressure. Thus a plunger 47 (Fig. 9) is seated in a longitudinal bore 48in the through a longitudinal slot 50 in the reduced, semithe left-hand edge of the member 39. A spring 51 is ger 47 and a screw 52 threaded into said bore 48. The tension of said spring anay be regulated by adjusting sai'il screw. The tension on the spring 51 is much less than on the spring'iifi, The flattened portion 53 of the semi-cylindrical part 4i ol' the carrier 42 has a tapped opening 54 (Fig. 4) therein for cooperation with a headed screw55 (Fig. 9) having a shouldered portion 56 that constitutes the pivot for a locking or clutch member 57 shown in detail in Fig. (i. 'Ihepivot l'oi this locking member extends at right angles to the axis of the p In the normal disposition oi'the parts shown in Fi s.-

locking member extend to, oppositeisides of its pivotal center and on opposite sides of the axis of the platen and aret'urned inwardly at right angles to the body portion thereof," as indicated at 58. The edgeof each inwardly bent end is beveled or formed with awcdge-like'i'ace 59 or 59 'and thesebevel faces are adapted to cooperate with the beveled faces .44and 44 respectively on the locking member 39. From an inspection of Fig. 13 it I will be seen that the'outerflat face 60 ofthe locking member 57 cooperates-with thewall 43*. of thecut-out 43 in the right-hand platen. head. The locking member 57, it will also be observed, is adapted to partake oi the Q2; 15 and 16, the line spacing wheel is positivelylo'ckcd torotatc with the platen. Figs. 1, 2 and 13 show j the position the parts assume if one of the notches between two teeth 37'happens to be positionedcentrally oi. the slot 43, while Figs. 15 and 16 show the position they assume it said notch happens to be to one sideof the center of said slot 43. In either case, in the normal position of the parts, the carrier 42 and theclutch member 39 are both in their extreme right-hand positions;

wedge surfaces 59and'59 pressed into engagement with the wcdgesurl'aces 44and 44 of the clutch member 39,

by thetension of the spring 36; ISaidmegnber 57 is thus .wedgcd'inbetween said member39on the one hand and the fiat face 43 of. thefslot43 on the other, thus pressing the semi-circularpart 4Q bisaid' member 39 against the oppo'siteside of the tube 12. l.he"wodge 59, engaging thewed 44, prevents'the-platcn from turning toward the back of the machine; and the Wedge 59 engaging the wedge 44*;prevcnts rotation of the platen in the op posite direction, The platen head. is thus positively locked to the member 39, which, in turn, is positively locked to the line space wheel. In this position of the parts, the pin 46 stands some, little distance to the right of the notch 45 in the memberfii).

Shouldthe operator desire to release the platen from the line spacing wheel in order to effect a fractional line spacing movement of theplaten, it is merely necessary to press thc'finger piece 28 to the left, thus moving the carrier 42' in a like direction. The cffcctoi the initial 3 portion of the movement of the carrier 42 is to carry the locking member57 out of interlocking and wcdgihg engagement with the cooperating locking member 39.

While this release is bcing'effectcd the spring 51 0x4 pands and holds the locking member 57 at the righthand limit of its movement with the tooth 38 thereon engaged l etwe(m' t'wo teeth 37' on the line. spacing wheel] This engagement between the teeth 38 andthe teeth on the line spacing wheel continues until the When this disengagement has been effected, tho.pin 46 on the carrier 42 will come into ongagement with the locking member 39, as indicated in Fig. 11', and a further movement of the carrier 42 to the left will cause the locking member 39 to travel with it and the parts will be moved to the disengaged position shown in Fig, 8, with the tooth 38 out of engagement with the line space wheel, and the locking member 57 disengaged from the member 39.' In this movemerit, the pin 46, engaging the,notch 45, has centered the member 39, so that its wings 39 are central of the slot 43, as shown in Fig. 13. The platen may then be rotated to any desired extent 'by either of its finger wheels 8 or 25 independently of the line spacing wheel.

Should the operator for any reason desire to maintain the parts in the released positions, it is merely necesof the spring 36 on the plunger 26, thus forcing the.

sary to press the linger piece 35 in, thus forcing the locking head 33 at the other end of the spindle into the reduced portion 29 of the plunger 26, and while pressure is still maintained on the finger piece 35 pressure 4 may be released from ,the'finger piece 28 controlling the plunger.' The effect of this is to place the pressure shoulder 29? on the plunger against the locking head 33 and preventing the spring 34 from restoring the locking head to. its normal position as heretofore described.

When the operator desires to restore the parts to locking 'engagement again, it is merely necessary to press on the finger piece 28 which will free the lockinghead 33 from the pressure of the spring 36 and-the locking head will be moved'iback to its normal position, thus releasing the plungerZG and enabling all theparts to be restored to their normal positions. In the first part of the movements of the parts back to normal position, the carrier 42 and thelocking members 39 and 57 carried-thereby travel in unisonuntil the tooth 38 engages between two teeth 37 on the line spacing whee]. In this movement the member 39 is free from the locking member 57, so that it is free to 'turn. The beveled tooth 38, therefore, is guided by the beveled teeth 37 and readilyenters the notch between them, turning slightly one way'or the other, if necessary. When the tooth 38 firmly seated in place between the teeth 37., as indicatedin Fig. 7, then the movement of the locking member to the right willbe arrested, but a further continued movement of the carrier42 takes place and during the movement of the carrier 42 independently. of the locking member39 the spring 5]. is compressed, it being understood that the tension of the spring 36 is much greater thanthat of the spring 51. This'continued movement-of the carrier towards the normal position will impart a bodily movement to the locking member 57 which is carried thereby, and will.

force the-inclined wedging faces-59 and 59" thereof into a wedging engagement with the inclined faces 4.4 and 44 on the locking member39, and" when the parts are in effective wedging and interlocking engagement the carrier will be arrested from further movement and the platen will be effectively and positively locked to the linespacing wheel at the exact point where-the platen was adjusted relatively to the wheel.

' During theengaging movement of the locking-inem ber 39, hereinbefore described, the tooth 38' thereon is brought into engagement with the teeth 37 on the 'line spacing wheel when the locking member 39 is free to receive a'limited turning movement on its bearings and around the-arcial center of the platen.

If during the engagement of these parts the beveled crown of the tooth 38 should meet the beveled crown of a tooth 37 on the line spacing wheel, the locking member 39 will be turned on its bearings around the axis of th% platen until the tooth 38 finds its proper position between the two teeth of the line spacing Wheel, as shown in Fig. 16, itbeing understood that the line spacingwheel is at this time nainlainml against accidental. displacement by a spring roller detent 61 (Fig. 3). After the tooth 38 has been properly centered and has its parallel sides received botwecn the parallel sides of two-adjacent teeth 37 on the line spacing wheel and has reached the limit of its engaging movement, then the movement of the carrier 42 will, as heretofore pointed out, be continued. Any changein the angular position of the engaging member 39 effected during its 'engagoment with 1110 line spacing wheel will displace the wings 39" on .the locking member, so that they assume different angular positions in the cut-out portions 43 of the plalen head. During the bodily movement of the locking member 57 with the carrier one or the other of the inclined faces 59 and 59 will be brought into engage ment with its cooperating inclined facc'44 or 44 before the other, and a further bodily movement of the locking member 57 with its carrier effects a turning of the locking member 57 on its pivot, so as to automatically swing the member 57 to a position where both of its wedge faces 59 and 59" are in engagement witli the corresponding faces 44 and 44, so that it will properly cooperate with the locking member 39 in the angular position it has assumed during the engagenfent of this member with the line spacing wheel.

In Figs. 1, 2 and 13 of the drawings I have illustrated the locking member 39 as'being centored within the opening 43 in the platen head, and in these circumstances the locking member 57 will move to its locking position, shown in Fig. 1, without turning on its pivotal center, both engaging surfaces 59 and 59 on. the locking member 57 simultaneously engaging their respective cotiperatingwcdging surfaces 44 and 44 on the locking member 39. But in Figs. 15 and 113, said member 39 is displaced and the member 57 is correspondingly. inclined.

From the foregoing it.will be understood that the single tooth 38 is employed to interlock with and engage the large teeth 37 onv the line spacing wheel and that during this engagement the locking member 39 may receivefautomatically a rotation around the longitudinal axis of the platen, and that during the engagement of the locking member 57 with the wedg ing-surfacos on the locking member 39 said locking member 57 may automatically turn on its pivot to effect adjustment of 'the locking member 39, an d thus the parts automatically regulate themselves c r oompensate for anyv shifting of the parts-which may be 35 justment effected locking and disengagement between the line spacing wheeland platen; that one of the members 57-has a bodily reciprocating movement with the carrier 42 and an independent pivotal movement around its pivot 55; that the member 39 has a bodily reciprocating movement towards and away from the teeth 37 of the line spacing wheel and that this movement is independent of but in the direction of the engaging and disengaging movement of the member 57; that the interlocking clutching members when brought into engagement automatically adjust the clutching means to the rela: tive adjustment effected between the platen and the line spacing wheel and that the spring 36 maintains the two locking members in clutching. engagement and also maintains the locking member. 39 in clutching and interlocking engagement with the line spacing wheel.

4 I do not wish to be understood as limiting my in'- vention to the features of construction herein shown and described since -I believe I am the'first to provide disengageable interlocking clutch members which are effective to positively lock the line spacing wheel and platen at any point in the relative adjustment of the two. There are likewise many features of the invention which I regard as broadly novel, such, for instance, as the means for affording an automatic adjustment of the interlocking clutching means to the relative adbetween the line spacing wheel and platen.

While I have shown and described the clutch mechanism for connecting a'line spacing wheel and platen, forwhichsucli clutch mechanism is particularly adapt- 40 ed, nevertheless, it should be understood that I do not limit the use of the clutch mechanism to the particular relation shown as it may be employedin various machines to effect a connection between two parts that have a relative adjustment and in which it is essential that a nice adjustment be effected and main tainod and a rigid connection provided.

When I refer herein and in the accompanying claims to means for positively connecting the line spacing wheel and platen, 1 mean to designate means for rigidly connecting the parts as by effecting an interlocking connection between vth'em as distinguished from a mere frictional connection, and when I refer to means for connecting the platen and line spacing wheel at any point in the relative adjustment between the two ,'1 mean to include means for connecting the line spacing wheel and platen to rotate together, such in cans being effective to connect these parts together at any pointwhere the parts can be located by a relative rotary ad j-ustment between them and without affecting that adjustment as distinguishedirom devices, for instance, having engaging teeth that may be thrown into orout of engagement, but in which an "adjustment finer than the teeth employed to connect the clutch members cannot be effected.

What I claim as new and desire to secure by Letters Patent, is:

1. In a typewritiug machine. the combination of a. line" spacing heel. a platen that is adapted to be turned relativcly to said wheel, and disengageable interlocking means for positively connecting the platen and line spacing wheel at any point in the relative adjustment between the two.

2. In a fypowl'ii'ing machine. the combination of-a line spacingwheel. a platen that is adapted to be turned relatively to said wheel. and disengae'cable interlocking clutch members for positively connecting the platen and line spacing wheel at any point in the relative adjustment between the two.

3. In a typcwriting machine, the combination of a line spacing wheel, a platen that is adapted to move relatively to said linc spacing wheel, and interlocking means for positively connecting said line spacing wheel and platen at any point in th'erclative adjustment between the two. said conncctingmieans comprising a lockingmembcr operatively connected to one of said parts and having an inclined engaging face. a coiiperating locking member operatively :conncctcd vlo the other of said parts and having an inclined engaging face. and hand actuated means for moving said locking members towards and awayfrom each other.

4. In a typewriting machine/the combination of a line 'spacing wheel,.a platen thatis adapted to turn independently thereof. a wedge-like locking member operatlvely eonported to one of said parts. a cooperating pivoted wedgelike locking member operatively connected to the other of said parts, and means for elfecting a'relative movement of the locking members towards and away from each other to effect a positive interlocking connection and disconneciion between the line spacing wheel and platen at any point in the relative adjustment between the two.

5. In a typcwriting machine, the combination of a line spacing wheel. a platen that is adapted to turn indepen d ently thereof. a wedge-like locking member operativelycon- I- nccted to one of'said parts, a secondcooperating wcdge like locking member operatively connected to the other oi',,

said parts. and mounled to have a bodily reciprocating movement and an indepcndent pivotal movement, and hand actuated means for effecting the bodily movemcnt of said second locking member towards. and away from the other locking member to effect a positive interlocking connection and disconnection between the line spacing wheel and plat-on at any point in the relative adjustment between the two.

ii. In a'tvprn'riting machine. the combination of a line spacing when]. a platen that'is adapted to turn independcntly thereof. a hand actuated reciprocating" carrier operativcly connected to one of said parts, a locking member pivoted to said reciprocating carrier so as to have a bodily movement with the carrier and an independent pivotal movement thereon. and a second cooperating locking membcr operativel'y connected to the other of said platen andline spacing: \vhccl parts and with which said first montioncd locking member coiipcratcs to lock the line spacing wheel and platen together.

7. In a typewriting machine. the combination of a line spacing wheel, a platen that is adapted to turn independcnily thercoi.- a hand actuated reciprocatory carrier operativcly connected to one of said parts. a locking member pivoted to said reciprocating carrier so as to have a bodily movement with the carrier. and an independent pivotal movement thereon. and a second coiipernting locking membcr, means for affording a positive clutching engagement and disengagement between said locking member and the other of said platen and line ispacing wheel parts, and

whereby the line spacing wheel and platen may be positively locked together or may receive a relative adjust ment.

R. The combination of two parts that are adapted to receive a relative adjustment, and means for connecting said parts together. said connecting means (OllljillSlllg a' pivotcd wcdging device. cooperating interlocking means. and means for effecting a relative movement between said plvoicd wcdglng device and the coiiperniing Interlocking means. whereby an interlocking poslllvo connection can he onecied or'brokcn at will.

9. The combination of two parts that are adapted to receive a relative adjustment, and means for connecting said.

parts together, said connecting means comprising a pivoted wedg'ing device operatively connected to one of said parts, cooperating interlocking means operatively connected to the other of said parts. andmeans fon'effecting a relative movement between said pivoted wedging device and the cooperating means, whereby an interlocking posi- 11. The combination of two relatively adjustable parts, and interlocking clutching means for positively connecting said parts in any adjusted position thereof, said clutch- .ing means including means for automatically adjusting the clutching means to the adjustment between said relatively adjustable parts.

12. The combination of two relatively adjustable parts,

interlocking clutching means for positively connecting said parts in the adjusted position, thereof, and means for affording an automatic adjustment of the clutching means to the adjustment between said parts when the' clutchingmeans are brought into interlocking clutching engagement. v13. The combination of two relatively adjustable parts,

: and interlocking clutching means for positively connecting said parts in the-adjusted position thereof; said clutching means including a pivoted device which is brought into'a wedging and interlocking engagement on opposite sides of its pivot, to automatically adjust the clutching means to the adjustment between said relatively adjustable parts.

14. In a typewriting machine, the combination of a line spacing wheel, a platen that is adapted to be adjusted rela: tively theretoyand interlocking clutching means for positively connecting the line spacing wheel and platen, said clutching means including means for automatically adjusting the clutching means to the relative adjustment'of the line spacing wheel and platen.

15. In a typewriting machine, the' combination of a line spacing wheel, a platen that is adapted to be adjusted relatively thereto, interlocking clutchingmeans for positively connecting the line spacing wheel and platen,- and means for affording an adjustment of the clutching means to the relative adjustment between the line spacing wheel and platen when the clutching meansare brought into inter locking clutching engagement.

16. In a typcwrlting machine, the combination of line spacingwheel, a platen that is adapted to be adjusted relatively thereto and interlocking clutching means for. positively connecting the line spacing wheel and platen, said clutchingv means including apivoted device which is brought into a wedging and interlocking engagement on opposite sides of its pivot to automatically adjust the clutching means to the relative adjustment of the line spacing wheel and platen.

17. In a typewriting machine, the combination of a line spacing wheel, a platen that is adapted to be adjusted relatively thereto, interlocking clutching means for positively connecting the line. spacing wheeLand platen, said clutching means including'a pivoted device which is brought into a wedging and interlocking engagement on opposite sides of its pivotto automatically adjust the clutching means to the relative adjustment of the line spacing wheel and platen,'and hand controlled means for effecting a movement of said pivoted device into and out of wedging and interlocking engagement, such movement being independent of the pivotal movement of said device.

18. In a typewriiing machine, the. combination ota line spacing wheel a platen that is adapted to be adjusted relatively thereto, interlocking clutching means for positively connecting the line spacing wheel and platc-n, said-clutching means including means for automatically adjusting the clutching means to the relative adjustment of the line s'naclng wheel and platen. and band actuated means for 'and being movable in two directions.

effecting an engagement and disengagement ofthe interlocking clutching means. I 1

19. In a typewriting machine, the combination of a line spacing wheel. a platen that is adapted to be adjusted relatively thereto. interlocking clutching means for positivelyconnccting the line-spacing wheel and platen, means for afiording an automatic adjustment of the clutching means to the relative'adjustment between the line spacing wheel and platen when the clutching means are brought into interlocking clutching engagement, and independent hand controlled means for effecting an engagement and disengagement of the interlocking clutching means.

20.' In a typewriting'machine, the combination of a line spacing wheel. a platen that is adapted to rotate independently of said wheel, and interlocking clutching means for positively connecting the line'spacing wheel and platen,

said clutching means comprising two clutching members of said movable member to enable-it to automatically adjust itself to the relative adjustment between the line spacing wheei'and platen when the .clutch membersare 'brought into interlocking engagement.

21. In a typewriting machine the combination of a line spacing wheel, a platen that is adapted to rotate independently of said wheel, and interlocking clutching means for positively connecting the line spacing wheel and platen, said clutching means comprising two clutching-members. one operatively connected to the platen and the other operatively connected. to the line spacing wheel and one of said members having a wedging engagement with the other 22. In'a typewriting machine, the combination of a line spacing wheel, a platen that is adapted to rotate inde pendently of said wheel, and interlocking clutching means for positively connecting the line spacing wheel and platen, said clutching meanscomprising-two clutching' members one operatively connected to the platen and the other operatively connected to the line spacing wheel and one of said members being pivoted and adapted for wedging and interlocking engagement on opposite sides of its pivot; and means for moving one of. saidmembers rela:

platen, and the other adapted to be fixed to rotate with the line spacing wheel, and means for bringing said mem bers into an interlocking and wedging engagement to I cause them to rotate together.

24.- The combination of two relatively adjustable parts, interlocking clutching means for positively connecting V said parts in the adjusted position thereof, said clutching means including means for automatically adjusting the clutching means to the adjustment between said rela tively adjustable parts, and a spring for maintaining the clutching means in engagement.

25. The combination of two relatively adjustable parts, interlocking clutching means for positively connecting said parts in the adjustcd position thereof,-means for affording an automatic adjustment of the clutching means to the adjustment between said-parts when the clutching means are brought into interlocking clutching engagement, a, spring for maintaining the clutching means in engagement, an means for locking the clutching means disengaged.

1G. The combination of two relatively adjustable parts, interlocking"- clutching menns for positively connecting said parts in the adjusted position thereof, said clutching means including; a pivoted device which is brought into a wedging' and interlocking engagement on opposite sides of its pivot to automatically adjust the clutching means to the adjustment between said relatively adjustable parts,

iso

sprl ng for maintaining the clutching means in engage ment, and'means for locking the clutching means disengaged. v

27. 'In a typewriting machine, the combination of a line spacing wheel, a platen that is adapted'to be adjusted relatively thereto, i-nterlockingclntching means for positively connecting the line spacing wheel and platen, sald'clutc'h- 28. In a typewriting' machine,-,the combination'of a line spacing wheel, a platen that is adapted to be adjusted relatively thereto,'interlocking clutching means for positively connecting the line spacing wheel and platen, means for affording an automatic adjustment of the clutching means I i to the relative adjustment between the llnespacing wheeland platen when the clutching'means'are brought into'lnterlocking clutching engagement, :1 spring for maintaining the clutching means in engagement, and means for locking the clutching, meansdisengaged.

29 In a typewrltingmachine, the combination of a line spacing wheel, a platen that is adapted to be adjusted relatively thereto, interlocking clutching means for positively connecting the line spacing wheel and platen, said clutching means including a'pivoted device which is brought into wedging and interlocking engagement on opposite sides of its pivot to automatically adjust the clutching means to the relative adjustment of the line spacing wheel and'platen, a spring for maintaining' theclutching in engagement, and means for locking the clutching disengaged. A

30. In a typewriting machine, the combination of a line spacing wheel, a platen adapted to turn independently of said wheel, clutch teeth on said wheel, a clutch membef adapted to engage said teeth, and'a second clutch member means adapted to positively engage the first mentioned clutch member.

31. In a typewriting machine, the combination of a line spacing wheel, a platen adapted to turn independently of said wheel, clutch teeth on said wheel, a clutch member adapted to engage said teeth, and a second clutch member adapted to positively engage the first mentioned clutch member, the line spacing wheel and platen being positively locked to rotate together when the first mentioned clutch member engages the teeth on the wheel and the first mentioned clutch member is engaged by the second.

in a typewriting machine, the combination of a line spacing wheel, a platen adapted to turn independently of said wheel, clutch teeth on said wheel, a clutch member adapted to engage said. teeth, asecpnd'clutch member adapted to positivelycngage the first mentioned clutch member, and hand actuated means for first separating said,

clutch members and for then separating the first mentioned clutch from engagement with the teeth on the line spacing-wheel. Y

i 33. In a typewriting machine, the combination of a linespacing wheel, a platen adapted to turn independently of said wheel, clutch teeth on said wheel, a clutch member adapted to engage said teeth, a second clutch member adapted to positively engagethe first mentioned clutch member, the line spacing wheel and platen being positively .locked to rotate together when 'the'first mentioned clutch member engages the teeth on the wheel and the first mentioned clutch member is'engaged by the second, and hand actuated meansfor first separating said clutch members and for then separatingthe'first mentioned clutch 'from engagement with the teeth on the line spacing wheel.

4 34. In a typewrlting machine, the combination of a line spacing wheel, a platen adapted to turn independently of said wheel, clutch teeth onsaid wheel, a clutch memberadaptcd to engage said teeth, and a second clutch member adapted to positively engage the first mentioned .clntch A member by an interlockingwedging engagement.

35. In a typevaiit-ing machin the combination ofa line spacingwheel, a platen thatsis adaptedito rotate independently of said line 'spaclngwheel, and interlocking clutching members for positively connectingthe said wheel and platen! andiwhich members rceive' a relative movement to elIect a'wedging engagementbetyveen them, one 01! said means members being pivoted so that it may turn on its pivot during engagement between said members in order to automatically regulate itself to the adjustment betweezr the platen and line spacing wheel.

36. In a typewriting machine, the combination of a line spacing wheel, aplaten that is adapted to rotate indcpend ently of said li'ne spacing wheel a carrier that is movable longitudinally oft-he platen, a clutch member pivoted to said carrier, the pivotal axis of the carrier being at substantially right angles to the axis of the platen, a second coiiperatin'g clutch member, wedging surfaces between sa-id',clutch' members, and hand actuated means for edect- .in g alrelative movement ,of said clutch members longi- 'tudinallyor the platen to aiiord an interlocking wedging engagement between the-' clutch members and thereby positively 'lock theplaten to the linespacing wheel.

'37. In a 'typewriting machine, the combination ofa line spacing wheel, a platen that is adapted to rotate independently of-said line spacing-wheel, a carrier that is movable-longitudinally of the platen, a clutch member pivoted to said carrier about centrally of the platen, the pivotal axis of the clutch member extending substantially at right angles to-the axis of the platen, wedging surfaces on 0pposite sideslof the pivotalcentcr of said clutch member, and a codperating clutch member with which said pivoted clutch member is adapted to interlock with a wedging action to positively connect the line spacing wheel and platen.

38, In a typewriting machine, the combinationlof a line spacing wheel, a platen that is adapted to rotate, independently of said line spacing whee a carrier that is movable longitudinally of the platen, a spring for-moving said carrier in one direction, hand operated meansfor moving the carricrin the opposite directionagalnst the pressure of the spring, a clutch member pivoted to said carrier about centrally of the platen, the pivotal axis of the clutch member extending at substantially right angles to the-axis of the platen, wedging surfaces on. opposite sides of the pivotal center of said clutch member, and a cooperating clutch memberwvith which said pivoted clutch member is adapted to interlock with a wedging'action to positively connect the line spacing wheel and platen.

In a typewriting machine, the combination of a line spacing wheel, a platen that isadapted to rotate independ ently of said line spacing wheel, and clutch mechanismtor positively connecting the line spacing wheel and pinion, said clutching mechanism comprising two clutch members, the first being adapted to be thrown into and out of positive, engagement with the line spacing wheel and the second being adapted to be thrown into and out of positive engagement with the first clutch member, so that an interlockingengagement may be effected between the two clutch members and between the line spacing wheel and platen.

40. In a typewriting machine, the combination of a line spacing wheel, a platen that is adapted to rotate independently of said line spacing wheel, ajseries" of teeth on said wheel, a clutch member that is"adapted to positively ongage the said teeth to positively connect the clutch member to the wheel, a second clutch member adapted to inter- -lock with and positively engage the first mentioned clutch member by a wedging action, and a spindle that is adapted to control the engagement and disengagement, between the clutch members and to control the engagement and disengagement between one of said clutch members and the teeth on the line spacing wheel. I

41. In a typewriting machine, the combination of a line. spacing wheel, a pl:1ten that is adapted to rotate independently of 'said line spacing wheel, aseries of teeth onsaid wheel, a clutch member that is adapted to positively engage the said teeth to positively connect the clutch member to the wheelfasejcond clutch member adapted to interlock with and positively engage thefirst mentioned clutch member by a wedging action to positively lock the line-spacing wheel'and platen to rotate together. a spring restored spindle that is adapted to control the engagement and disengagement between the clutch men\ I bers and to control the engagement and disengagement between one of said clutch members and-the teeth on the line spacing wheel, and means for locking/said spindle against tbespring pressure ,thereon.

42. In a typewriting machine, the combination of a line spacing wheel. a platen that-is adapted to rotate independently of said line spacing wheel, a clutch member that has a limited rotary movement independently ofthe platen and is adapted to positively engage the line spacing wheel. anda second clutch member connected to rotate with the platen and to he brought into positive interlocking engagement with the first mentioned clutch member.

43. In a typcwriting machine, the combination of a line spacing wheel, a platen that is adapted to rotate inde penrlently of said line spacing when]. a clutch member that has a limited rotary movement independently, and which is movable longitudinally of the platen to effect apositive interlocking engagement. and disengagement between the line spacing wheel and platen, and a second clutch member connected to rotate with the platen and to be brought into positive interlocking engagement with the first men tioned clutch member.

44. In a typewriting machine, the combination of a line spacing wheel, a platen that is adapted to rotate inde pendcntlyof said line spacing. .wheel, and two interlocking clutch members for positively connecting the line spacing wheel and platen, both of said clutch members being adapted to move longitudinally of the platen intheir movements into and out of interlocking engagement, one of said clutch members having a limited rotary movement independently of the platen and being adapted to positively engage the line spacing whce'l,,and the other clutch member being adapted to engage and interlock with the first mentioned clutch member in any position it may assume relatively to the platen.

45. In a typewriting machine, the combination of a line spacing wheel, a platen' that is adapted to rotate independently of said line spacing wheel, two positively engagcable clutch members, both connected to rotate with the platen and 'one of them having a limited rotary niove ,ment relatively to the platen and adapted to positively engage the line spacing wheel, and means for controlling the engagement between the said clutch members and be tween one of said clutch members-and the line spacing wheel.

46. In a typewritlng machine, the combination of a line spacing wheel, a platen that is adapted to rotate independently of saidline' spacing wheel, two positively engageable clutch'members both connected to rotate with the platen and one of them having a limited rotary movement relatively to the platen and adapted to positively engage the line spacing wheel and the other being adapted to automatically accommodate itself to the relative adjustment between the other clutch member and the platen, and

" means for controlling the engagement between the said clutch members and between one of said clutch members and the line spacing wheel.

47. In a typewriting machine, the combination of a line spacing wheel, a platen that is adapted to rotate independently of said line spacing wheel, two positively engageable clutch members both connected to rotate with the platen and one of them having a limited rotary movement relatively to the platen and adapted to positively engage the line spacing wheel and the other clutch member having a pivotal movement and a wedging action in its coiiperation with the other clutch member, and means for controlling the engagement between the said clutch members and be- I tween one of said clutch members andthe lin'e spacing wheel.

spacing wheel. a plalvn that is adapted lo rotaic independently of said lino Slim-lug wheel. lwo clulrh members, one of which is movable longiluilinally ol tlnplaten into and out of positive ongnironn-nl \vilh llm lino spacing wheel,

and the othermovahle longitudinally of the platen into and out of positive engagement with its cooperating clutch member, said clutch members including means for auto matically adjusting them to the relative adjustment between the line spacing wheel and platen, spring pressed means for normally maintaining engagement between the clutch members and for maintaining one oi the clutch members in engagement with the line spacing wheel, and hand actuated means for releasing the clutch members from engagement with each other and with the line spacing wheel;

50. In a typewriting machine, the combination of a litre spacing wheel, a platen that is adapted to rotate independently'of said line spacing wheel, two clutch members, one

being, adapted to positively engagethe line spacing wheel and having a pivotal movement on an axis which is coincident with the axis of the'platen and the other clutch member being pivoted on an axis that extends transversely to the axis of the platen and has a wedging interlocking engagement with its coiipcr-ating clutch member.

5].. In a typcwriting machine, the combination of a line spacing wheel, a platen that is adapted to turn independently of said wheel, releasable clutching means for positively connecting said line spacing wheel and platen to turn together, said clutchingmeans comprising two interlocking clutch. members, one nperatively connected to the platen and the OtilOI OIJOIUtIVGlY connected to the line spacing wheel, one having a limited turning movement in dependently of the part that carries it and on an axis that extends longitudinally of the platen, and the other having a pivotal movement on the part that carries it and on an axis that extends at substantially right angles to the axis of the platen, and means for aifording a further movement of one of said clutch members towards and away from the other and into and out olf a \vedging interlocking engagement.

52. In a typewriting machine, the combination of a line spacing wheel, a platen that is adapted to turn independently of said wheel, releasable clutching means for posi tively connecting said line spacing wheel a'nd platen to turn together, said clutching means comprising two interlocking spring engaged clutch members one operatively connected to the platen and the other operatively connected to the line spacing wheel and one having a limited turning movement independently of the part that carries it, and on an axis that extends longitudinally of the platen,

and the other having -a pivotal movement on the part that carries it and on an axis that extends at substantially right angles to the axis of. the platen, and means for affording afurther movement of one of said clutch members towards and away from the other longitudinally of the platen and into and out of a \vedging interlocking engagement, and means for locking one of the clutch members in the disengaged or released position.

525. In a typewriting machine, .the combination of a line spacing. wheel, a platen that is adapted to turn independently of said wheel, releasable clutching means for positively connecting said line spacing wheel and platen to turn together, said clutching means comprising two interlocking clutclf members, one operatively connected to the platen and the other disengageably connected by positive locking means to the line spacing wheel and one having a limited turning movement independently of the part that carries it and on an axis that extends longitudinally of the platen, and the other havinga pivotal movement on the part that carries it and on an axis that extends at substantially right'angles to'the axis of the platen, and 

